The PET800-12-074ND from Bel Fuse is a DC to DC Converter with Input Voltage -40 to -72 V, Output Voltage 1 12 V, Output Current 1 65000 mA, Output Power 800000 mW, Operating Temperature 0 to 50 Degree C. Tags: Rack Mount, Boost/Step Up. More details for PET800-12-074ND can be seen below.